Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 901 020 700 TYPE IIB found under Insulation Acoustical Aircraft by The Boeing Company. The National Stock Number assigned to this part is 1560016644747, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 901 020 700 TYPE IIB.